Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

Effective Date: 08/01/1997, Docket: RP97-161-007, Status: Effective

Fourth Revised Sheet No. 76 Fourth Revised Sheet No. 76 : Effective

Superseding: SUBSTITUTE THIRD REVISED SHEET NO. 76

13. BACKHAUL AND EXCHANGE TRANSPORTATION

Transporter will provide Backhaul and Exchange

Transportation service pursuant to Rate Schedule RTS at rates

to be negotiated between zero and the applicable Maximum

Transportation Commodity Rate and zero and the applicable

Maximum Transportation Demand Rate, and will provide Backhaul

and Exchange Transportation service pursuant to Rate Schedule

ITS at rates to be negotiated between zero and the applicable

Maximum Transportation Commodity Rate, as such rates are set

forth on Sheet No. 4 of Transporter's currently effective

FERC Gas Tariff. Backhaul and Exchange Transportation

service on a no-fee basis shall be available where such

service is mutually beneficial to both Shipper and

Transporter and provides substantially equal benefits to both

parties. Examples of Backhaul and Exchange Transportation

service which may be beneficial to Transporter include

Backhaul and Exchange Transportation service which, under

then existing operating conditions, will assist in

elimination of capacity bottlenecks and improve Transporter's

ability to transport gas. Backhaul and exchange service

shall be available on a non-discriminatory basis.

14. BILLINGS AND PAYMENTS

14.1 Monthly Billing Date. The imbalance statement

should be rendered prior to or with the invoice, and the

transportation invoice should be prepared on or before the 9th

Business Day after the end of the production month. Rendered is

defined as postmarked, timestamped, and delivered to the

designated site. All amounts due from Shipper for the preceding

month should be determined according to the measurement,

computations and charges provided in this Tariff, the Gas

Transportation Contract, and any Park and Loan Service Contract

between Transporter and Shipper. At points where OBA's exist,

invoiced quantities shall be based on scheduled quantities.

14.2 Monthly Payment Date. Shipper shall pay

Transporter, at a bank designated by Transporter, so that

payment is received and Transporter has available funds

therefrom on or before the twentieth (20th) day of each

month, the full amount billed by Transporter to Shipper under

Section 14.1 for the immediately preceding month. Such

payment shall not be considered overdue if the twentieth

(20th) day of the month is a Saturday, Sunday, or National